286401616 has 20 divisors (see below), whose sum is σ = 555182100. Its totient is φ = 143128832.

The previous prime is 286401607. The next prime is 286401631. The reversal of 286401616 is 616104682.

It can be written as a sum of positive squares in 2 ways, for example, as 117505600 + 168896016 = 10840^2 + 12996^2 .

It is a super-2 number, since 2×286401616² = 164051771294822912, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44490 + ... + 50518.

It is an arithmetic number, because the mean of its divisors is an integer number (27759105).

Almost surely, 2^286401616 is an apocalyptic number.

It is an amenable number.

286401616 is a deficient number, since it is larger than the sum of its proper divisors (268780484).

286401616 is a wasteful number, since it uses less digits than its factorization.

286401616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9006 (or 9000 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 286401616 is about 16923.4043856430. The cubic root of 286401616 is about 659.1614818077.

The spelling of 286401616 in words is "two hundred eighty-six million, four hundred one thousand, six hundred sixteen".